diff --git a/README.md b/README.md
index 0b18143..9449370 100644
--- a/README.md
+++ b/README.md
@@ -36,6 +36,7 @@ mvn clean package
 pad generator: java -cp target/classes/ xor.cli.PadGenerator /tmp/pad 1024000
 simple xorer : java -cp target/classes/ xor.cli.Xorer /tmp/pad false /etc/passwd /tmp/xorpasswd
 and back.... : java -cp target/classes/ xor.cli.Xorer /tmp/pad false /tmp/xorpasswd /tmp/originalpasswd
+same?        : diff /etc/passwd /tmp/originalpasswd
 
 receiver     : java -cp target/classes/ xor.cli.Receiver /my/random-pad 0 /tmp/received 5000
 sender       : java -cp target/classes/ xor.cli.Sender /my/random-pad 0 /file/to/send 127.0.0.1 5000